this avoid driving nSRST high after startup, by making sure the nOE is
initialized inactive/high.
This also matches the config used for the STM32-PerformanceStick.
Change-Id: I9376de575b7dc834310d57dbd58575d51f60183e
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/878
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Tested-by: jenkins